Rain Skip and Soil Type

Sorry for all the noob questions. I have sandy soil and was wondering what to amount to schedule the rain skip. I decided to set it to .25 inches. Doesn’t that sound right? Also, I need help in identifying my soil. I’m 5 miles west from the coast in NJ and I remember sand everywhere when my home was built many years ago. I know top soil was put down for sod in hr front and seeding in the back. Should I assume my soil type is sand or sandy loam? Thanks for the help.

Hope this helps